still wanting to see what it's about or at least settle things with them to let them know how much the process sucked getting set up, you can let them know in there.
Download the Discord app and create your account, and then login to your CougConnect account in your browser from your phone. When you login on the CougConnect website, there is a green button on your profile page that says "Connect with Discord" that you will click on.
Go to the Discord and give them some feedback.